Nov., 1904.] South American Hemiptera-Heteroptera. 201 



ochreous or light ferruginous. Margins of sulci are much 

 swollen, and a short carina extends from their posterior 

 borders parallel with central carina. Scutellum with 

 strong central carina and transverse elevations which are 

 ochreous. Elytra with veins and costa, commisural line 

 and apex of corium indistinctly ochreous, membrane light 

 fuscous, the apical portion smoky hyaline, the veins black- 

 ish- Beneath light fuscous with margins of pleuree, acet- 

 abulae, orifices and most of the ventral segments, especially 

 on the disk, pallid. Legs mostl}^ fuscous with coxae, tro- 

 chanters, base and apex of femora and central part of 

 tibiae pallid. Length 5 to 5.5 mm., width 1.5 mm. 



Three specimens from Bartica Br. Guiana, March, 

 April and May, collected by H. S. Parrish. 



Were it not for generic differences this might be con- 

 sidered as the female of Acroleucus maurus as the colora- 

 tion is of a similar pattern, the strong ochreous and 

 ferruginous markings here being obsolete or obscured in 

 maurus. The membrane, however, is subhyaline with 

 fuscous veins. Observations on the possible relationship 

 of the two forms are desirable. 



Lygaeus variegatus De G. Bartica, Br. Guiana. Two specimens. 

 March and April Mr. Van Duzee listed specimens for 

 June. 



Oedancala notata Stal. Bartica, Br. Guiana. Numerous spec- 

 imens. March and Ma_, 



Heraeus cincticornis Stal. Cochabamba, Bolivia. August. One 

 specimen agreeing perfectly with Stal's description. 



Pamera globiceps Stal. Bartica, Br. Guiana. Four specimens. 

 March and April. 



Pamera vicinalis Dall. Bartica, Br. Guiana. July 14, 1901. 

 One specimen. 



Pamera Dallasi Dist. Bartica, Br. Guiana. Two specimens. 

 March and Mav. 



Pamera consuta Dall. Bartica, Br. Guiana. One specimen. 

 April. 



Pamera costalis Stal. Bartica, Br. Guiana, March, April, and 

 May, 1901. 



Pamera parvula Dall. Bartica, Br. Guiana. Two specimens. 

 Agrees with Dallas' description but anterior femora are 

 black except at base and apex, not mentioned by Dallas. 



Pamera tineodes Burm. Bartica, Br. Guiana. Three specimens. 

 April, May and August, 1901. 



Pamera serripes Fab. Bartica, Br. Guiana. Three specimens. 

 August, 1901. 



Pamera tuberculata n. sp. General shape of costalis, the pro- 

 notum with two distinct conical tubercles within impunc- 

 tate, circular areas. Length of female, 7.5 mm. 



